Combination-tool.



J. F. ANDERSON.

COMBINATION TOOL. APPLICATION FILED DEO.Z6,1911.

Patented Jan. 19, 1915.

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APPLICATION FILED DEO.26,1911.

1,125,433. H Patented Jan.19,1915.

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mm as Patented Jan. 19,1915.

" JOHN F. ANDERSON,-

SAN FRANCISCO, CALIFORNIA.

coMBINA'rI'o'N-TooL.

Specification of Letters Patent.

Application filed December 26, 1911. Serial No. 667,757.

To all whom ifmay concern:

. Be it knownthat I,- JOHN F. ANnnRsoN,

residing in the city and county of San Francisco, ,State of California, have invented certain new and useful Improvements in Combination-Tools, whereof .the following inclin for automobile valves.

To these ends I provide the tool with a device which will'engagc the valve so that the latter may be rotated by it, and I fur" ther provide it with means whereby at intervals the valve is momentarily withdrawn, the rotation meanwhile continuing so that the position of .the valve is continually changed, whereby I 'prevent the cutting of operation is grooves and cause the valve seat to be ground smoothly and absolutely true.

A I further interpose a spring between the valve holding jaws and the rotating mechanism whereby I secure anelastic pressure of the valve duringthe operation and also provide means to facilitate frequent raising of the valve, thus leaving-new grit and oil to run into the bearing surfaces so that the performed more smoothly and quickly. I also provide the tool with centering means which act asiautomatic center to hold in alinement while in use.

The particular devices and combinations which constitute my invention are recited in the claims at tie end hereof and I wish it understood that I do not desire to be limited except as stated in said claims. For the better understanding of. my 1nvention I have illustrated an embodiment of it in the accompanying three sheets of drawings which I will'now proceedto de-.

scribe.

In the drawings: Figure 1 is an elevation of a drill containing my invention but with the valve engaging jaws omitted; Fig. 2 is a, similar elevation taken at', right angles to Fig. 1 from the left-hand side thereof; Fig.

v 3 is a partial elevation on a large scale showing the mechanism for. causing the jump or momentary retraction of the chuck out of operative position; Fig. 4 is a similar view of the "same parts but with the jump mechanism in operative position; 5 1s a cross section on thelinie a, bfof 3 as the parts would appear if rotated 90 degrees; Fig. 6 is a detail of the jump mechanism; Fig. '7 is an elevation of the parts shown in Fig. 3 but with the sleeve removed and the parts rotated 90 degrees; Fig. 8 is a similar view to Fig. 4: but shows the parts from the opposite side thereof; Fig. 9 is a cross section on the liner, (2 of Fig. 8; Fig.

10 isan elevation, of the lower part of the tool in operation "grinding an automobile valve; Fig. 11 shows the upper part of that portion of the tool shown in Fig. 10 with the centering spider folded and Fig. 12 is in Fig. 11.

In these figures; represents the ordinary shank of a breast drill with the breast piece 2 having mounted thereon the I drive gear 3 and the'handle at by which it is operated; the shank of the'handle is made in vary the leverage or power.

two parts 5 and 6, telescoping together to I T is the .pinion which engages with the I gear 3'and causes the rotation of the shank 8 which carries the chuck 9. I

Mounted upon the lower end of the stem 7 or frame is a sleeve 10 secured by a set screw 11 which has pivoted to its lower edge three or more jointed legs 12. The legs are intended as seen in Fig. 10 to rest upon the edge of any convenient orifice through which a valve may be reached and thereby center and steady the tool' while inwuse grinding suchv valve. When not in use the a legs are folded up against thesleeve as is shown more particularly in Figs. 1, 2 21116.11.

13 represents a part of an automobile engine cylinder whose valve 14 is being ground; 15' are the jaws which engage the' valve. These jaws are pivoted to the end ofa shank 16 and are caused to bite by the turn of a screw sleeve 17. The shank is divided just above the threaded portionlfi and the two ends are joined by a sleeve 18 and pins 19, one of these pins moves in a slot 20 in the upper piece 21 of the shank and a spring 22 1s inserted in this sleeve between .the two pieces 16 and 21 of the shank thus giving a spring pressure upon the valve during the operation of grinding.

. The end 21 of the shank is engaged by the chuck 9 as seen in dotted line, Fig. 10v and rotated by the turning of the latter-in the .usual manner.

J Uponthe upper part ofthe rotating stem Patented Jan. 1c, 1915.

. an end view from below, of the parts shown of the tool-andcofitiguoustto the wheel 3 1 mount a shortsleeve 23 -which is "provided .will once during each revolution raise the device 23 and with it raise the stem and the chuck and the valve, when it is in use and return the valve again at a little different point of its rotation thus permitting oil and grit to work in and giving, a much smootherand truer action to the grinding operation.

F or the purpose of throwing this pump mechanism out of operation I surround it with a semi-sleeve E which is provided with an angular slot F through which one of the lugs 24 projects, and a spring G shown exclusively in Fig. 3 to lock it in position. This semi-sleeve engages the standard or fixed portion of the tool and thus holds the device 28 in position to engage the groove 26 as it appears inFigs. *1 and more particularly 8 and 9, or to be free there from .as shown in Figs. 1, 2, 3, and 6 and more particularly 5 and 7, as the case may be. The stem 8 which carries at its lower end the chuclo 9 is capable of sliding through the pinion 7 and for this purpose is made of considerable length extending into a hollow in the shank of the tool as shown by dotted lines Fig. 1. may thus be projected more or less to reach otherwise inaccessible points.

29 and 30 represent heads of a sleeve on the stem 8 on which sleeve the device 23 is directly mounted between the heads. The head 29 of the sleeve is milled and the head 30 has a split and tapered section provided with a thread 31. Thus by turning the nut 31, the split end of sleeve 30 may be made to bite the stem 8 which passes through it to hold it firmly against further longitudinal movement, while permitting it to rotate freely.

is a groove in the stem 8 which is engaged by a projection on the sleeves 29 and 30 to lock them together rotatively.

33 is a sliding bolt operated from a head 34- and serving to engage one of a series of notches 35 in the edge of the nut 31 thereby holding the latter while the. sleeve is rotated, thus causing the latter to bite.

laving thus described in detail the em bodiment of-iny invention what I claim is: 1. In a dev ceof the character described, a

The stem pon which is a milled nut shank provided with a swivel section, jaws on said section adapted to engage a valve and screw threaded means for locking said jaws upon said valve.

2. A device of the character described comprising a shank, a swivel section on said shank, jaws pivoted to said swivel section adapted to engage a valve and extei .al means on said swivel section for locking said aws in operative position.

. 3. In a drill the combination with the rotating' shank thereof, aswivel section on said shank, jaws pivoted to said section and adapted to engage recesses formed upon the flat surface of a valve and a screw threaded sleeve engaging said section and the outer edge of said jaws for locking the same upon an elastic section. interposed between said shank and said jaws.

In a breast drill, the combination with a rotating member thereof and a fixed memher, an adjustable sleeve mounted on the fixed member, legs pivotally secured to said sleeve and adapted to center said drill by engagement with the work;

7. In a breast drill the combination with a. rotating stem and a main gear-wheel a groove on said maingear-wheel provided with a depressed portion, a split sleeve on said'stem having means adapted to engage said groove and said depressed portion whereby the stem is given a jump at intervals and means to release said engagement and lock said split sleeve in position.

8. In a breast drill the combination with a fixed member and a vertically adjustable member connected to said fixed member, a split sleeve and a nut adapted to clamp said sleeve upon said adjustable member and hold it in a predetermined position.

In testimony that I claim the f regoing I have hereto set my hand in the presence of witnesses, this 20th day of December, 1911. 

